<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        #d1{
            color: red;
            font-size: 30px;
        }
        div{
            color:blue;
            font-size: 30px;
        }
        p{
            color: yellow;
        }
    </style>
</head>
<body>
<div id="d1">
    <p>这是div里面的p</p>
    <span>这是div里面的span</span>
    <a href="">超链接</a>
</div>
<div id="d2">这是div2</div>


</body>
</html>